Sheaf-hoist



E. EBERLY AND W. G. FETRUW.

SHEAF HOIST.

APPLICATION FILED Nov. 2o, I9I9. 1,371,777. Patented Mar. 15, 1921, 2 sHEETrs-SIIEIEIl I.

Ef. EBERLY AND w. G. FETnow.

sHEAFv H0|sT.` APPLICATION FILED NOV. 20. 1919.

1,371,777. Patented Mar. 145, 1921.

2 SHEETS-SHEET 2.

UNITED s'lArEs PATENT oFFIcE.

EDGAR EBERLY AND WILLIAM G. rn'rnow, or iaEenA Nrcsiaune,V PENNSYLVANIA- SHEAF-HOIST.

Specification of Letters Patent.

Patented Mar. 15, 1921.

Application filed November 20, 1919. Serial 170.339,484.

^ T o all whom it may concern Be itknown that we, EDGAR EBERLY and WILLIAM'G. FETROW, citizens of the United States, and residents of Mechanicsburg, in the county of Cumberland and State of Pennsylvania, have invented a new and Improved Sheaf-Hoist, of which the following is a description.

Our invention relates to sheaf hoists and particularly to sheaf hoists of the general f type shown in United States Letters Patents No. 1,114,454, and No. 1,203,514,1granted to us October 20, 1914 and October 31, 1916, respectively.

rlhe general object of lour present invention is to provide a sheaf hoist of the indicated type improved in various particulars, especially with respect to the provision of sheaf-throwing means arranged at the upperV end of the hoist for taking the sheaves ^from @the elevating conveyer and throwing them to a mow as well as with respect to other important features includinga novel means of mounting the hoist to be laterally swingable when desired through an arc to variously direct the sheaves to the mow'.l

The above and other distinctive features are hereafter particularly described and defined in the claims. Y

Reference is to be had ings are merely illustrative of one example of the invention. f

Figure 1 is a side elevation of a shea hoist constructed in accordance with our invention;

Fig. 2 is-a front viewthereof; Fig. 3 is a plan View, Y Fig. 4 is a sectional side elevation on an y enlarged scaleV ofthe lower portion of the hoist; i

Fig. 5 is an enlarged sectional plan view on the line 5 5, Fig. 1. Y f

i In carrying out our invention in prac'- tice, in accordance with the particular eX-` ample illustrated, a bracket 10 is provided forming the supporting means at the lower end of the hoist, said bracketl being swingably mounted, for which purpose in the construction illustrated a vertical sleeve 11 integral therewithis disposed between upper' and lower brackets 13 -to vwhich said sleeve is secured by ab'olt 12 passing therethrough, the'brackets being bolted or otherwise secured to a Ypost 14 or other fixed support,

Vto the accompa-v nying drawings forming a part of this speci` cation, it being understood that the draw-v the post being here shown as adjacent to a barn A represented in part. The front endV of the bracket 1() is formed with a fork 15 on `which a frame 16 is supported to be readily detached when desired. The bracket- 10 is ordinarily maintained against swingmg movement by a brace 17, here shown as having a laterally bent hooked rear end 18 engagmg a pin 19 on'the barn A, the front endk of said brace being 'secured by a bolt 2O toV a lug 21 on the fork 15.v `The arrangement permits the brace 17 to 'un'- hook itself from the pin 19 should a wagon;

part, for example, strike the lower portion of the structure, in whichl case the unhooking of the brace will permit the structure to yield at the bottom and have a limited movement about the aXiso-f the bolt 12,

the mast springing sufficiently to vpermit this yielding of the structure in response to a blow, lthereby preventing damage to the structure. i f

The frame 16 extends vertically Yand has an open side giving the frame in general a U-shape and at the lower end said frame presents a vertical bearing 22 vhaving thel lower end 23 thereof reduced to be received betweenthe members of fork 15 and to present a shoulder at vthe base of said reducedV` portion so that the bearing 22 rests on top of said fork and may be readily disengaged therefrom by a lateral movement Vwhen desired. A short verticalshaft 24 extends upwardly through the bearing members 22, 23 and is"provided with a'beltpulley 25 or equivalent driving element. The shaft chain havingV fingers 34 toV engage the'- sheaves. A housing 16'3 on frame 16 serves to house the gear elements on said lframe.

' `A mast 35 is stepped in thel upper endv of the frame 16 which is provided for the purpose withV a socket 16a having a set screw 16b to hold the mast against turning in f the socket.V The chain 33, at the upperend of the hoist, runs over a sprocket' pulley 36 on a transverse shaft 37 supported in a frame 38 suitably astenedas at 39 to the'mast 35 at the top. Said frame `33 in the preferred form oit' the invention'presents an arm 40 sprocket pulley 36 turning with the shaft v 37 or upper .shaftof the elevator which shaft servesto drive said chain 45 and the.

. pulley 44. Secured to said shaft 43 to turn therewith and thus distant from the upper sprocket shaft 37 of the eleva-tor is a sheaf throwing means to take the sheaves from the elevating lingers 34 and throw the same to a mow, the illustrated means `for the purpose U consisting of paddle-like blades 46 carried by side bars 47 havingbrackets 48 thereonV keyed to the shai't 43, twoA of said throwing `ying such that the revolving elements 46 elements 46 being employed, disposed at the sides of the chain 33, the arrangement become beneath the shear at a finger 34 as the latter approaches the upper sprocket 36 so that the Yshear is carried rearwardly in the arc Vof a circle, and thrown to the top of the mow. The shaft 43 has its bearing portions 37 preferably coned asV indicated in F'g. 3, the brackets 48 presenting corresponding bearings. The frame 38" is braced by obliquely disposed bars 49 secured at `their upper ends to the side bars 42 by bolts 49 and secured at their lower ends to `a collar 50 adjustable vertically on the mast 35 and adapted to be secured by a set screw 5l. By `the described arrangement the i'rame138 can be adjusted vertically about the bolt or pin 39 to properly position said frame. H i

The sheaves to be taken up by the chain 33 are placed in succession in a cradle' 52 in the form of approximately U-shaped fingers secured to the outer ends of a cross bar 53 having ahub or collar 54 fast'on the mast 35.

A tightener 55 is provided for the chain 45 and consists of a Aplate overlying the upperrun `ofsaid. chain. The `plate 55 is rigid with a depending bracket 56 having avertical slot 57 through which one of the bolts 49passes, whereby the tightener may be vertically adjusted relatively to the chain to exert more or less pressure thereon.

With ,the described arrangement power applied to the drive gearas by a belt (not shown) `running over the pulley 25 actuates through the described gearing `the hoist chain 33 and the shear-thrower elements 46 being revolvedby the driven shaft 43 will lift the sheaves from the chain as they ar- "lower part, the latter having a rigid collar 351 thereon provided with a set screw 35C. To raise or lower the upper portion of the p mast 35 means is provided as follows: A

band 58 embraces the telescoping section 35 and constitutes a holding dog and an upper band 59 embracing said section constitutes a lifting dog. A hand lever60 is fulcrumed` near one end onthe upper end of a supportingbar 6l which is secured atits lower end as at 62 to the collar 35b or other fixed part ofthe mast structure and the front arm of said lever is connected as by a link 63` with the lifting dog t9.` The holding dog 58 has an arm 64 extending therefrom and ai'lording support `for the same by reason ofthe arm extending between the two sides of the bar 6l, a portion of said bar being broken away Vin Fig. 1. Thus, the lever 60 may be rocked upwardlyto release the band 59 from the mast section 35 and drop said band so that with the downward section to prevent the same from dropping] Any suitable bracing means may Vbe provided for the upper portion of the mast, there being shown a brace 65V-the sides of which flare from mast 37 as seen in Fig. 2. Said brace 65 is secured to any fixed part of a barn structure, 'for example, there being indicated a beam 66.,V On the front end of the brace 65 is a U-bolt 67 embracing the mast section 35. vInthe raising ofthe mast section 35al for tightening the chain 33, the U-bolt 67 will be first loosened.l Also, the U-bolt 67 may be loosened to permit the hoist structure to be turned in the bearing fork l5 to vary within the limits permitted by the flare of brace 65, the direction in which the sheaves are thrown, the tightening of the bolt vserving to hold thcstructure in position with the sheaf-throwing elements 46 disposed in a given direction.

We would state in conclusion that'while the illustrated example constitutes `a practical'` sprocket pulley adjacentto the lower end of the mast over which said chain runs, a frame on said mast at the upper end, a sprocket pulley mounted in said frame over which said chain runs at the upper end, a shaft mounted in said frame laterally distant from said upper end of said chain, means t0 turn said shaft with the turning of the secondmentioned sprocketpulley, and sheaf-throwing elements secured at one end on said shaft to turn therewith, said elements being disposed at each side of the chain and of a length to turn at their outer ends in paths adjacent to the chain to lift the sheaves from the latter and throw the same away from the hoist.

2. A sheaf hoist including a supported mast, an endless sheaf-carrying chain, a sprocket pulley adjacent to the lower end of the mast, a frame on the mast at the upper end, a sprocket pulley mounted in said frame and over which said chain runs at the upper end, means pivotally mounting said frame on the mast, a brace secured at its upper end to said frame and ad'ustably secured at its lower end to the mast to permit adjustment of said frame in a vertical plane, sheathrowing means revolubly mounted in said frame remote from the upper end of said chain and said second pulley, means to drive said shear-throwing means with the turning of the second pulley, and a belt-engaging arm on said frame at the front.

3. A sheaf hoist including a mast, sheatelevating means carried by the mast, a frame at the lower end of said mast and carrying the same, drive means mounted in said frame to actuate said elevating means, a bracket on which said frame is supported, said bracket ing means adapted to carry sheaves upj wardly to the top of the mast, drive means for said chain, sw'ingable means mounting said frame, a brace adapted to prevent said last-mentioned means from swinging, a fixed support, and means on said support engaged by said brace, said brace being self-detaching Jfrom said last-mentioned means when the bracket is swung in one direction.

5. A sheaf hoist including a frame, a mast thereon, hoisting means associated with the frame and mast, and a bracket presenting a fork, said frame having a member supported on said fork and lremovable therefrom by a lateral movement, together with releasable means to hold themast against accidental disengagement from the fork.

6. A sheaf hoist including a frame, a mast thereon, hoisting means associated with the frame and mast, a bracket presenting a horizontal fork, a vertical bearingmember on said frame and extending through the fork, said bearing member having support 0n the fork at the top, a vertical shaft extending through said bearing, means whereby said shaft may be driven, and a drive connection between said shaft and the hoisting means, together with releasable means to hold the mast against accidental disengagement from the fork.

EDGAR EBERLY. WILLIAM G. FETROW. 

